ANDRIST, Ralph K. Heroes of Polar Exploration . By the editors of Horizon Magazine; author, Ralph K. Andrist, in consultation with Rear Admiral GeorgeJ. Dufek. L.: Cassell, 1963. Pp. [2],7-152. Illustrated. Large 8vo, illust rated dark cloth boards with white spine. #2 in the Cassell Caravel Book series. Contents: 1. At the Ends of the Earth, 2. Arctic Routes to Riches, 3.Tragedy in the Arctic, 4. The Top of the World, 5. Mystery of the Southern Continent, 6. The Race to the South Pole, 7. Voyage of the Endurance, 8. P ole Hopping in the Age of Flight, 9. Over and Under the Polar Ice. Vg. 15.00